Stuart Raymond Patrick

US Patent:

6377272, Apr 23, 2002

Filed:

Apr 17, 1998

Appl. No.:

09/062360

Inventors:

Amit Chatterjee - Redmond WA
Stuart T. Laney - Seattle WA
Stuart Raymond Patrick - Issaquah WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G09G 504

US Classification:

345605, 345698, 345600, 345597

Abstract:

In response to a change in the color depth of a computer systems display device, the invention dynamically changes the color depth of existing objects in system memory to match the changed color depth of the device. As a result open applications need not be shut down and then reopened to change the color depth of objects already in system memory. The dynamic changing is accomplished through a number of functions calls between an application, the operating system and a display driver. In one embodiment of the invention, copies with the changed color depth are made at one time of all objects in system memory and the original objects discarded. The copies are then transferred to screen memory (if the display device is a video display terminal) for display as they are requested. In another embodiment of the invention, copies with the changed color depth are made selectively as the objects are transferred to the screen memory. The copies are then discarded from system memory after transfer and the original objects retained.

US Patent:

6525743, Feb 25, 2003

Filed:

Feb 25, 1998

Appl. No.:

09/031316

Inventors:

Stuart Raymond Patrick - Issaquah WA
Amit Chatterjee - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06T 1100

US Classification:

345619

Abstract:

Operating system enhancements that enable an application program to create and perform graphics operations on device-independent bitmaps (DIBs) efficiently. The enhancements are in the form of functions that return to the application program a handle to the DIB and a pointer to the location of the DIB in memory. With the handle, the application program can use the capabilities of the operating system to perform graphics operations on the DIB. With the pointer, the application program can use its own drawing capabilities and address the DIB directly. The operating system enhancements also streamline the design and content of graphics drivers such as display drivers by placing basic graphics functions in a graphics engine that communicates with the a graphics driver. Simple graphics operations are passed from the graphics driver to the graphics engine, allowing the driver to be limited to more complex operations that utilize special characteristics of graphics hardware associated with the driver.

US Patent:

6683618, Jan 27, 2004

Filed:

Dec 13, 1994

Appl. No.:

08/355406

Inventors:

Stuart Raymond Patrick - Issaquah WA
Amit Chatterjee - Redmond WA

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06T 1100

US Classification:

345619

Abstract:

Operating system enhancements that enable an application program to create and perform graphics operations on device-independent bitmaps (DIBs) efficiently. The enhancements are in the form of functions that return to the application program a handle to the DIB and a pointer to the location of the DIB in memory. With the handle, the application program can use the capabilities of the operating system to perform graphics operations on the DIB. With the pointer, the application program can use its own drawing capabilities and address the DIB directly. The operating system enhancements also streamline the design and content of graphics drivers such as display drivers by placing basic graphics functions in a graphics engine that communicates with the graphics driver. Simple graphics operations are passed from the graphics driver to the graphics engine, allowing the driver to be limited to more complex operations that utilize special characteristics of graphics hardware associated with the driver.

US Patent:

7421592, Sep 2, 2008

Filed:

Feb 13, 2004

Appl. No.:

10/779299

Inventors:

Andrew Kadatch - Redmond WA, US
James E. Walsh - Woodinville WA, US
Stuart R. Patrick - Bellevue WA, US
Xiaowen Shan - Kirkland WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 1/00

US Classification:

713300, 707 10

Abstract:

The present invention leverages high-frequency interrupts and/or low priority threads to accurately determine which computing resources are available. This provides a computing asset (CPUs and/or software applications) with a means to accurately compensate for resource utilization in order to increase its performance. By utilizing the present invention, the computing asset can optimize its performance in a real-time, self-tuning manner. In one instance of the present invention, high intensity, low priority threads are initiated on available CPUs (logical and/or physical) to effectively replace a CPU's idle time with the low priority thread. This thread generally constitutes a computationally-intensive and/or a memory-intensive thread which permits a highly accurate performance measurement to be obtained for available CPU resources. In another instance of the present invention, high-frequency interrupts are initiated on CPUs to compensate for processes that are shorter than a thread's time quantum, providing a more accurate performance counter.

US Patent:

7603484, Oct 13, 2009

Filed:

Apr 21, 2005

Appl. No.:

11/111413

Inventors:

Chung Lang Dai - Redmond WA, US
Mukund Sankaranarayan - Sammamish WA, US
Stuart R. Patrick - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 3/00
G06F 9/44
G06F 9/46
G06F 13/00

US Classification:

710 5, 719327

Abstract:

A user-mode device driver architecture is provided by the subject invention. The architecture includes a reflector, a driver manager and a host process which hosts and isolates one or more user-mode device driver(s). The user-mode device driver runs in the user-mode (UM) environment and has access to various UM services. The reflector resides in “kernel memory” (e. g. , memory/resource(s) available to operating system) while the driver manager, host process and user mode device driver(s) are located in user space (e. g. , memory/resource(s) available to user application(s)). The reflector provides a secure, stable communication path for application(s), the host process and/or user-mode device driver(s) to communicate with the operating system.

US Patent:

7650421, Jan 19, 2010

Filed:

Dec 30, 2002

Appl. No.:

10/331817

Inventors:

Stuart Raymond Patrick - Bellevue WA, US
James E. Walsh - Woodinville WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/16

US Classification:

709231, 709223, 709232

Abstract:

Adaptable accelerated content streaming allows data to be streamed from a server to a client over a network at an accelerated rate for an amount of time before reducing the rate. In accordance with one aspect, the accelerated rate is prohibited from exceeding a threshold amount, which is based at least in part on both a total bandwidth of the server and an amount of bandwidth currently being used by the server. In accordance with one aspect, the data can be streamed to the client at up to an adaptable accelerated rate.

US Patent:

20060242270, Oct 26, 2006

Filed:

Apr 21, 2005

Appl. No.:

11/111016

Inventors:

Mukund Sankaranarayan - Sammamish WA, US
Chung Dai - Redmond WA, US
Stuart Patrick - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/177

US Classification:

709220000

Abstract:

A host process for use in a user-mode device driver architecture is provided by the subject invention. The architecture includes a reflector, a driver manager and the host process which hosts and isolates one or more user-mode device driver(s). The user-mode device driver runs in the user-mode (UM) environment and has access to various UM services. The reflector resides in “kernel memory” (e.g., memory/resource(s) available to operating system) while the driver manager, host process and user mode device driver(s) are located in user space (e.g., memory/resource(s) available to user application(s)). The host process can include a host runtime component and a framework component. The host runtime component is responsible for building a driver stack object, and, locating/loading object(s) of a framework component. The host runtime component further includes a message handler that facilitates communication with the reflector and routes information to components of the host process.

US Patent:

20100141678, Jun 10, 2010

Filed:

Dec 8, 2008

Appl. No.:

12/330295

Inventors:

Nadim Y. Abdo - Bellevue WA, US
Asael Dror - Palo Alto CA, US
Max Alan McMullen - Redmond WA, US
Stuart Ray Patrick - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G09G 5/00

US Classification:

345619

Abstract:

Various techniques for remoting graphics are described in the claims, drawings, and text forming a part of the present disclosure.